Space Brief 29 Nov 2024
Today's brief covers China's Beidou satellite plans, SpaceX's Starship advancements, potential Space Command HQ relocation, and more.
SL-4 R/B (08031)
COSPAR: 1975-065B | Alt Name: Soyuz-U No. 017 Blok-I
DECAYED
Image
Additional Sources
Launch Details
Launch Date
July 15, 1975
Launch Site
Launch Pad
LC1
Launch Vehicle
Soyuz-U
Orbital Elements
NORAD ID
08031
International Designator
1975-065B
Decay Date
7/17/1975
Explore in the Catalog
Basic Satellite Info
Name
SL-4 R/B
Alternative Name
Soyuz-U No. 017 Blok-I
Type
Rocket Body
Status
Space Junk
Owner
RVSN
Country
USSR
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
6.7
Diameter
2.7
Span
6.7
Dry Mass
2350
Launch Mass
2350
Shape
Cyl
Radar Cross Section
Unknown
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
11S510
Purpose
Unknown
Mission
Unknown
Manufacturer
PROG
Life Expectancy
Unknown
Bus
Blok-I
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
Space Brief 17 Aug 2025
Today's space news features major US Space Force satellite launches, regulatory changes supporting private space initiatives, and updates on SpaceX's Starship advances.
X Report 17 Jun 2025
SpaceX successfully launched 26 Starlink satellites from California, preparing for upcoming crewed missions to the ISS.
NASA Announces First-Ever ISS Medical Evacuation via SpaceX Crew Dragon | KeepTrack X Report
NASA plans first-ever medical evacuation from ISS using SpaceX Crew Dragon for Crew-11 astronaut. Starlink 6-96 mission scrubbed and rescheduled. Starbase Pad 1 tower and launch mount under review.
SpaceX Unveils Space Traffic Management System, Bahamas Landings Resume | KeepTrack X Report
SpaceX unveils new space traffic management system for orbital coordination. Bahamas grants permission for rocket landings after Starship debris pause. Musk proposes lunar satellite catapult.
X Report 23 Sep 2025
SpaceX successfully launched the NROL-48 mission, growing the National Reconnaissance Office's satellite fleet. Additionally, NASA introduced ten new astronaut candidates, increasing female representation in its ranks.
Space Force Adds Relativity, Impulse to NSSL Phase 3 | KeepTrack Space Brief
Space Force expands National Security Space Launch Phase 3 with Relativity Space and Impulse Space joining Lane 1 competition. New entrants gain pathway to military payload contracts.
X Report 22 Oct 2025
SpaceX sets a new launch record as it prepares for its 133rd Falcon 9 mission. Additionally, developments in satellite technology and mergers in the space sector highlight the ongoing competition.